linux/drivers/net/wireless/rsi/rsi_91x_sdio_ops.c

/*
 * Copyright (c) 2014 Redpine Signals Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 */

#include <linux/firmware.h>
#include <net/rsi_91x.h>
#include "rsi_sdio.h"
#include "rsi_common.h"

/**
 * rsi_sdio_master_access_msword() - This function sets the AHB master access
 *				     MS word in the SDIO slave registers.
 * @adapter: Pointer to the adapter structure.
 * @ms_word: ms word need to be initialized.
 *
 * Return: status: 0 on success, -1 on failure.
 */
int rsi_sdio_master_access_msword(struct rsi_hw *adapter, u16 ms_word)
{ … }

static void rsi_rx_handler(struct rsi_hw *adapter);

void rsi_sdio_rx_thread(struct rsi_common *common)
{ … }

/**
 * rsi_process_pkt() - This Function reads rx_blocks register and figures out
 *		       the size of the rx pkt.
 * @common: Pointer to the driver private structure.
 *
 * Return: 0 on success, -1 on failure.
 */
static int rsi_process_pkt(struct rsi_common *common)
{ … }

/**
 * rsi_init_sdio_slave_regs() - This function does the actual initialization
 *				of SDBUS slave registers.
 * @adapter: Pointer to the adapter structure.
 *
 * Return: status: 0 on success, -1 on failure.
 */
int rsi_init_sdio_slave_regs(struct rsi_hw *adapter)
{ … }

/**
 * rsi_rx_handler() - Read and process SDIO interrupts.
 * @adapter: Pointer to the adapter structure.
 *
 * Return: None.
 */
static void rsi_rx_handler(struct rsi_hw *adapter)
{ … }

/* This function is used to read buffer status register and
 * set relevant fields in rsi_91x_sdiodev struct.
 */
int rsi_sdio_check_buffer_status(struct rsi_hw *adapter, u8 q_num)
{ … }

/**
 * rsi_sdio_determine_event_timeout() - This Function determines the event
 *					timeout duration.
 * @adapter: Pointer to the adapter structure.
 *
 * Return: timeout duration is returned.
 */
int rsi_sdio_determine_event_timeout(struct rsi_hw *adapter)
{ … }